Fire Resistance Ratings: wall cmu
cmu siliceous 3hr to cmu siliceous 4hr
Fire resistance ratings for building assemblies per UL/ASTM E119 — IBC Table 601 construction-type requirements (Types IA through VB), CMU wall equivalent-thickness ratings by aggregate type, gypsum board on steel/wood stud assemblies, concrete slab and wall thicknesses, composite steel deck/concrete floors, spray-applied fireproofing (SFRM) for columns and beams by W/D ratio, concrete-encased column ratings, and fire door assembly ratings (20-minute through 3-hour). Sources: IBC 2021 Table 601, ACI 216.1-14, UL Fire Resistance Directory, GA-600-2021, NFPA 80-2022, ASTM E119.
| assembly category | record id | assembly description | assembly type | construction material | fire rating hr (hr) | key materials | min thickness in (in) |
|---|---|---|---|---|---|---|---|
| wall cmu | cmu siliceous 3hr | CMU Wall — Siliceous Aggregate — 3 Hour | wall | concrete masonry unit | 3 | CMU siliceous aggregate | 6.9 |
| wall cmu | cmu siliceous 4hr | CMU Wall — Siliceous Aggregate — 4 Hour | wall | concrete masonry unit | 4 | CMU siliceous aggregate | 8.8 |
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